12.1×20.2
12.1×20.2
10.3×5.2
10.3×5.2
9.1×3.2
9.1×3.2
3.4×1.6
3.4×1.6
1.2×0.4
1.2×0.4
0.4×0.7
0.4×0.7
分析:把每一個式子進(jìn)行計(jì)算,根據(jù)得數(shù)的大小再進(jìn)行排列即可.
解答:解:1.2×0.4=0.48,
9.1×3.2=29.12,
0.4×0.7=0.28,
12.1×20.2=244.42,
3.4×1.6=5.44,
10.3×5.2=53.56,
即,12.1×20.2>10.3×5.2>9.1×3.2>3.4×1.6>1.2×0.4>0.4×0.7.
故答案為:12.1×20.2>10.3×5.2>9.1×3.2>3.4×1.6>1.2×0.4>0.4×0.7.
點(diǎn)評:本題運(yùn)用小數(shù)的乘法的計(jì)算法則進(jìn)行解答即可.
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